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Wavelength-scale optical parametric oscillators

a wavelength-scale optical and parametric technology, applied in non-linear optics, instruments, optics, etc., can solve the problems of inability to directly apply to accurately model opos in nano-structures, conventional theories which have mostly been developed for travelling wave nonlinear optical systems [17] or high-q resonators

Active Publication Date: 2022-10-11
CALIFORNIA INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes how to predict and estimate the behavior of small optical parametric oscillators (OPOs) by measuring or simulating the second-harmonic generation in different resonators. It also explains how to increase the efficiency of the parametric interaction by using an additional material with different optical properties. This disclosure can open new opportunities for classical and quantum nonlinear photonics.

Problems solved by technology

However, the main focus so far has been devoted to up-conversion in nanostructures, while optical parametric oscillation in wavelength-scale structures is still unexplored.
The conventional theories which have mostly been developed for travelling wave nonlinear optical systems [17] or high-Q resonators [19, 11] cannot be directly applied to accurately model OPOs in nano-structures.
However, these theories are either limited to specific structures or cannot explain the behavior of the system above the threshold.
Moreover, conventional designs and theories do not describe how to achieve optical parametric oscillation in wavelength scale resonators.

Method used

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  • Wavelength-scale optical parametric oscillators
  • Wavelength-scale optical parametric oscillators
  • Wavelength-scale optical parametric oscillators

Examples

Experimental program
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Effect test

example networks

[0193]f. Example Networks of OPOs

[0194]FIG. 14A illustrates an example of OPO network 1400 including a plurality of OPOs wherein the resonators are coupled evanescently and FIG. 14B illustrates how the modes of OPOs (the output electromagnetic fields of signal (s) and idler (i)) in FIG. 14A) are coupled. In general, the OPOs can be evanescently coupled (via an evanescent wave or field) or coupled through couplings 1402. Example couplings include, but are not limited to, waveguides a waveguide between each pair of resonators) or auxiliary cavities (e.g., a cavity containing two or more resonators). In some examples, each of the resonators are pumped by a pump outputting the electromagnetic field with different phases and / or different amplitudes.

[0195]In one or more examples, the time evolution of the output electromagnetic fields (signal s and idler i) outputted from each of the OPOs are given by

[0196]d⁢d⁢⁢t⁢am(s)=(i⁢⁢δωm-αm2)⁢am(s)+i⁢∑l⁢⁢∑n⁢ηl⁢⁢m⁢⁢n⁢bl⁢an(i)*d⁢d⁢⁢t⁢an(i)*=(-i⁢⁢δωn-α...

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Abstract

An OPO including a resonator comprising a material having a nonlinear susceptibility generating an output electromagnetic field in response to a pump electromagnetic field inputted into the material. The output electromagnetic field has one or more output wavelengths longer than one or more pump wavelengths of the pump electromagnetic field. The resonator has dimensions less than, or on the order of, the one or more output wavelengths in free space.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. Section 119(e) of co-pending and commonly-assigned U.S. provisional patent application Ser. No. 62 / 932,647, filed on Nov. 8, 2019, by Saman Jahani and Alireza Marandi, entitled “WAVELENGTH SCALE OPTICAL PARAMETRIC OSCILLATORS,” Client reference CIT-8388-P, which application is incorporated by reference herein.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT[0002]This invention was made with government support under Grant No, W911NF-18-1-0285 awarded by the Army. The government has certain rights in the invention.BACKGROUND OF THE INVENTION1. Field of the Invention[0003]This invention relates to Optical Parametric Oscillators (OPOs) and methods of making the same.2. Description of the Related Art[0004](Note: This application references a number of different publications as indicated throughout the specification by one or more reference numbers within brackets, e.g., [x]. A...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G02F1/39G02F1/35
CPCG02F1/39G02F1/3501G02F1/3507G02F2203/15G02F2203/10
Inventor MARANDI, ALIREZAJAHANI, SAMAN
Owner CALIFORNIA INST OF TECH